World champion Lauren Parker triumphed at the International Triathlon Union (ITU) World Paratriathlon Series in the Australian city of Devonport.
Parker recorded the winning time of 1hr 14min 53sec in the PTWC women's race, contested over a 750 metre swim, six-lap cycle and two-lap run.
She finished in front of compatriot Emily Tapp in 1:18:31, while Margret Ijdema of The Netherlands was third in 1:20:35.
With the female PTWC class making its Paralympic debut at Tokyo 2020, Parker is aiming to be on top of the podium this summer.
"The goal is a gold medal in Tokyo and I am on track," she said.
In the PTS2 women’s race, Yukako Hata of Japan claimed victory in 1:29:47, followed by Melissa Stockwell of the United States in 1:33:00 and Rakel Mateo Uriate of Spain in 1:45:33.
Austria’s Florian Brungraber was the gold medallist in the men's PTWC race, having dominated the two lap-run.
He crossed the line in 1:08:34, a clear distance in front of Jumpei Kimura of Japan in 1:10:14.
Home favourite Nic Beveridge was the bronze medallist in 1:10:26.
In the PTS2 class, Frenchman Jules Ribstein continued his winning streak from 2019, which included world and European titles.
He dominated proceedings in 1:11:03, with Russia taking silver and bronze.
Vasili Egorov was second in 1:14:45, while compatriot Mikhail Astashov came third in 1:16:10.